Joie Saffron SI 4-in-1 Car Seat vs Joie Baby Bay Latch SI Plus Car Seat

The Saffron SI is the one to buy if you need a seat from birth: it starts at 4 lb rear-facing and runs through four modes to a backless booster. The Bay Latch SI Plus is a forward-facing-only 3-in-1 that starts at 30 lb, so it cannot serve a newborn. The Bay's rigid LATCH, 15-position headrest, adjustable seat depth and 7-position footrest make it the more comfortable big-kid seat and the easier one to install. Both carry the same FMVSS 213a and 213b certifications and Joie's side impact protection; the Saffron's larger rating count (4.6 from 55) reflects a longer track record, while the Bay's 4.9 from 17 is a small sample.

• Choose the Saffron SI if you want one seat from birth through booster age, with rear-facing use and a plush infant insert included.
• Choose the Bay Latch SI Plus if your child is already past 30 lb and forward-facing, and you want rigid LATCH installation plus a footrest and deeper seat for long trips.